Apple Watch could save lives

The forthcoming smartwatch, due next year, will have a built-in sensor to monitor a wearer’s heart rate. Could this information be used to predict a heart attack or warn of the onset of heart disease?

“I think there is the potential out there,” Dr. Michael Scott Emery, co-chair of the American College of Cardiology Sports and Exercise Cardiology Council told FoxNews.com in an interview. “It could help in the future.”

One common stress test, for example, is to gauge how quickly a patient’s heart rate recovers after exercise. After a run on a treadmill, if the patient’s heart rate does not fall significantly within the first 2 minutes, it can be an indication that he or she is at an increased risk for a cardiac event within the next 5 or 6 years. There are already a handful of consumer devices on the market that can measure heart rates to take such readings.

Chest straps used by athletes and weekend warriors to track electrical heart readings have been used for years. But these are rapidly being supplanted by more comfortable and convenient runners’ watches, fitness trackers, and smartwatches that measure blood flow using LEDs under the wristband. More

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